The paper highlights the progressive awareness acquired by local designers, looking for an expert memory of the earthquake. This is possible through a transversal reading of the architectural transformations and of the anti-seismic protections adopted in Eastern Sicily in pre-industrial times. The paper outlines a rapid overview of the interventions and reconstruction policies following the 18th century earthquakes. The research summarizes part of a detailed analysis of the archive documentation related to the repair and reconstruction interventions following the 1818’s earthquake in the territory of Catania (Italy). The final objective is thus to recover and analyse the design choices and the technical culture of the designers of the time.